Mushrooms occurring in Europe - Pseudoinonotus dryadeus

By marianomariano | Nature - mushrooms | 10 Sep 2019


Pseudoinonotus dryadeus - One-year mushroom, growing singly or in clusters of several. 100 to 350 (650) mm long, 50 to 250 mm wide and 20 to 120 mm thick. Console-shaped, cushion-shaped or irregular. The upper surface is uneven and hilly, covered with a thin skin visible only in old fruiting bodies, without brindle. Initially white-gray, then apricot or tobacco, chestnut-colored in old age, finally almost black. The edge is thick, rounded, lighter, sometimes slightly wavy, in growing specimens secreting a yellowish liquid in the form of drops, after drying of which punctate marks remain.

Single-layer tubes, 5 to 20 mm long, soft, fragile after drying. Fawn or chestnut colored, slightly darker than the flesh. When young, with thin edges, covered with white-gray coating, finally fringed or torn.

Circular pores, angular with age. Very young when young, later 0.2 to 0.4 mm in diameter (3 to 4 by 1 mm). Initially, white-gray, later fawn or rusty brown, often growing old with a thin, whitish-yellow layer of mycelium.

Flesh 10 to 80 mm thick, slightly brindle, weak brindle, fawn or chestnut. Initially spongy and very moist, later it becomes dry, corky, radially fibrous, shiny and brittle.

Occurrence: It grows at the base of the trunks or on the exposed roots of oak or chestnut. Rare, not every year it grows on infected trunks.

Value: Inedible mushroom. Causes strong, white root rot in the lower part of the trunk of infected trees.

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